semi-automatic

• semiautomatic, semi-auto

From semi- +‎ automatic.

semi-automatic (not comparable)

1. Partially automatic.
2. Of a firearm that automatically ejects a shell and loads the next one, but requires the trigger to be squeezed for each shot; autoloading.

   Coordinate term: fully-automatic

   • 2008 September 17, “Bill in House forces capital to relax gun restrictions”, in The New York Times‎^[1]:

     The pro-gun majority in the House of Representatives moved Wednesday to compel the nation's capital to broaden the rights of its residents to buy and own firearms, including semi-automatic weapons.

semi-automatic (plural semi-automatics)

1. (weaponry) A semi-automatic firearm, especially such a pistol.
   • 1989 February 8, Robert Reinhold, “LOS ANGELES BANS RAPID-FIRING GUNS”, in The New York Times‎^[2]:

     The Los Angeles ordinance covers semi-automatics with a detachable magazine of 20 rounds or more. As examples, it cited such weapons as the AR 15 assault rifles, Uzi assault rifles and carbines, Ingram Mac-10 and Mac-11 assault carbines, AK-47 assault rifles, Thompson carbines and all Avtomat Kalashnikov weapons.

2. (automotive) A semi-automatic transmission.

(automotive):

• manumatic
• automatic
• manual